“Furniture board” Im not to sure what this is, are we talking MDF or chipboard? Either way is you use the right screws you can screw straight into the “end grain” on both and if youre also using a bit of glue then its plenty strong enough. I had never had much luck with screwing like that into MDF untill my mate gave me some made by Wurth which are designed for this and give a very good fixing, I still have the box which I keep just for this application. But Im quite happy to use Pocket Holes but I dont think Ive ever tried it on MDF..should be okay though.
Steve.